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Main page » Women » Functional underwear » Thermal Shirt » Short sleeve top » Icebreaker Women Siren Bra Cami - black
An essential everyday camisole made with soft and stretchy merino, the Siren Bra Cami features a built-in shelf bra and a natural feel. The Siren's 100% merino wool fabric is breathable, odor-resistant and incredibly soft next to your skin, and adjustable straps help dial in the perfect fit.
Inspired by nature, icebreaker harnesses the performance qualities of natural fibers to offer an alternative to clothing based on petrochemical synthetics. Merino is an annually renewable fiber that naturally resists odors, keeps you cool when it’s hot and warm when it’s not, and lets your skin breathe for comfort all day, every day.
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Inspired by nature, icebreaker harnesses the performance qualities of natural fibers to offer an alternative to clothing based on petrochemical synthetics. Merino is an annually renewable fiber that naturally resists odors, keeps you cool when it’s hot and warm when it’s not, and lets your skin breathe for comfort all day, every day.
Find more products here
100% Merino - Soft merino fibers that regulate body temperature in all weather conditions and resists odors; Internal built in bra with elastic band; Space to insert bra cups; Adjustable straps
100% Pure Merino; Body temperature regulation; Breathable; Moisture wicking; Odor resistant; Warm when wet; Biodegradable Fiber
100% Merino Wool, Exclusive of trims
MACHINE WASH COLD (30C); GENTLE CYCLE. WASH WITH LIKE COLORS. DO NOT USE SOFTENER. CLOSE ALL FASTENERS BEFORE WASHING DO NOT BLEACH. DO NOT TUMBLE DRY. LINE DRY IN SHADE. DO NOT IRON. DO NOT DRY CLEAN.
Icebreaker Size Chart
This chart is tailored to the current Icebreaker assortment at Fit-und-Warm: base layers, tops, pants/leggings, gloves, socks and headwear for women, men and children.
Men – Tops
| Size | Chest (cm) | Arm length (cm) |
|---|---|---|
| XS | 84–89 | 85–85.75 |
| S | 89–94 | 85.75–86 |
| M | 94–102 | 86–86.5 |
| L | 102–110 | 86.5–87 |
| XL | 110–118 | 87–87.75 |
| XXL | 118–126 | 87.75–88.75 |
| XXXL | 126–134 | 88.75–89.75 |
Men – Bottoms / Leggings / Pants
| Size | Waist (cm) | Hip (cm) |
|---|---|---|
| XS | 70–75 | 83–88 |
| S | 75–80 | 88–93 |
| M | 80–86 | 93–99 |
| L | 86–94 | 99–105.5 |
| XL | 94–102 | 105.5–112 |
| XXL | 102–110 | 112–118.5 |
| XXXL | 110–118 | 118.5–125 |
Women – Tops and Bottoms
| Size | Bust (cm) | Waist (cm) | Hip (cm) |
|---|---|---|---|
| XXS | 70–76 | 56–61 | 79–84 |
| XS | 76–82 | 61–66 | 84–90 |
| S | 82–88 | 66–71 | 90–96 |
| M | 88–94 | 71–77 | 96–102 |
| L | 94–100 | 77–84 | 102–108 |
| XL | 100–107 | 84–91 | 108–114 |
| XXL | 107–116.5 | 91–101 | 114–123 |
Kids
| Age / size | Height (cm) | Weight (kg) |
|---|---|---|
| 2 | 92 | 13–15 |
| 3 | 98 | 15–17 |
| 4 | 104 | 17–19 |
| 5 | 110 | 19–21 |
| 6 | 116 | 21–24 |
| 8 | 128 | 24–29 |
| 10 | 140 | 29–37 |
| 12 | 152 | 37–46 |
| 14 | 164 | 46–55 |
Gloves
| Size | Hand length (cm) | Palm girth (cm) |
|---|---|---|
| XS | 17 | 18.5 |
| S | 18 | 19.5 |
| M | 19 | 21 |
| L | 20 | 22.5 |
| XL | 21 | 23.5 |
Hand length: middle fingertip to the base of the palm. Palm girth: around the widest part of the hand, excluding the thumb. If between sizes, Icebreaker recommends the smaller size for a tighter fit or the larger for a looser fit.
Men's Socks
| Size | EU | US | UK |
|---|---|---|---|
| S | 39–41.5 | 7–8.5 | 6–7.5 |
| M | 42–44 | 9–10.5 | 8–9.5 |
| L | 44.5–46.5 | 11–12.5 | 10–11.5 |
| XL | 47–49 | 13–14.5 | 12–13.5 |
Women's Socks
| Size | EU | US | UK |
|---|---|---|---|
| S | 35–37 | 5.5–7 | 3–4.5 |
| M | 38–40 | 7.5–9 | 5–6.5 |
| L | 41–43 | 9.5–11 | 7–8.5 |
Headwear / Neckwear
Many Icebreaker Flexi Chutes and similar head/neck accessories are offered as One Size. For beanies or headbands with size choices, always use the product-specific Icebreaker size chart.
Fits
| Fit | Meaning |
|---|---|
| Slim | Snug, close-to-body fit for low-bulk layering. |
| Regular | Neither snug nor loose; worn solo or over other layers. |
| Relaxed | Loose-fitting layers for a more relaxed feel. |
Assortment check: current Fit-und-Warm Icebreaker brand page. Manufacturer sources: official Icebreaker Size Charts and current product size guides for men, women, kids and gloves on icebreaker.com. Research checked on 20 August 2026.